When a friend of a friend tries to get too friendly too soon, and you have to tell them to back up a step. When somebody goes in for a hug without checking if you're into it first. When you have to tell the person ahead of you in line at the supermarket to stay six feet apart. When you see someone you don't want to talk to trying to get your attention, so you appease them with a wave of acknowledgment. When someone is talking nonsense, and you're about to tell them all the ways they're wrong. Image Source: Getty / OLIVIER DOULIERY